make[1]: *** Waiting for unfinished jobs....
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libboost_coroutine.a(stack_traits.o): undefined reference to symbol '_ZN5boost13thread_detail18commit_once_regionERNS_9once_flagE'
/usr/lib/x86_64-linux-gnu/libboost_thread.so.1.58.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
What do you think can be the source of error? It used to compile well before...